title: Heterotopic pancreatic tissue located in the gallbladder wall. A case report.
abstract: BACKGROUND
  Heterotopia of the pancreas can be defined as the presence of pancreatic tissue in an abnormal location without any continuity with the main body of the pancreas. Heterotopic pancreatic tissue located in the gallbladder is a rare entity. Despite being a congenital condition, it takes years for heterotopic pancreas to become symptomatic.
  
  
  METHODS
  An 80-year-old male patient presented to our hospital with a two-week history of abdominal pain, nausea and vomiting aggravated after meals. Abdominal ultrasonography revealed minimal wall edema and small grain-sized gallstones in the gallbladder. The patient was hospitalized and laparoscopic cholecystectomy was performed for acute cholecystitis. Pathologic examination showed a 6 mm nodular mass of pancreatic tissue in the gallbladder wall, comprised mainly of ductal and acinic structures and a few endocrine cells.
  
  
  CONCLUSIONS
  We found this case of pancreatic heterotopia worth reporting because of its rare incidence.
authors.affiliation: Department of Pathology, Rize University Medical School. Rize, Turkey. hasan_gucer@yahoo.com
authors.forename: Hasan
authors.initials: H
authors.lastname: Gucer
authors.forename: Pelin
authors.initials: P
authors.lastname: Bagci
authors.forename: Esra Zeynep
authors.initials: EZ
authors.lastname: Coskunoglu
authors.forename: Cetin
authors.initials: C
authors.lastname: Karadag
mesh_terms: D015746:Abdominal Pain / Q000209:etiology; D000369:Aged, 80 and over; D002763:Cholecystectomy / Q000379:methods; D002828:Choristoma / Q000150:complications* / Q000175:diagnosis; D005705:Gallbladder Diseases / Q000209:etiology* / Q000601:surgery; D006801:Humans; D008297:Male; D009325:Nausea / Q000209:etiology; D010179:Pancreas; D014839:Vomiting / Q000209:etiology